When a mikvah, is a mikvah of muddied water it is still permitted for use as a ritual bath, however after ritually bathing you would be covered in mud, although ritually purified. It therefore makes sense to have a secondary bath or shower afterwards.
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DigitariaApr 7 '13 at 16:39

2 Answers
2

As in many Halachos there is a
Machlokes. In summary according to the
custom of the Ashkenazim, a woman
should not bathe or shower after
immersing in the Mikveh. Sepharadim,
however, do not follow this custom,
and thus Sephardic women may bathe or
shower immediately after immersion
without any concern.

Hm. The reason given for the preference (not prohibition) for not showering immediately afterwards is that people may think it's the shower, not the mikva, that did the purification. This would be funny with regards to men, as for a men's mikva the concept is tevilat Ezra, which actually can be fulfilled by a shower! My guess is there's no need to add what's only a preference for Ashkenazic women, on top of the meritorious-but-unrequired practice of men using the mikva, especially as the reason doesn't apply.
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ShalomJun 22 '11 at 0:59

@Shalom - It is not a universal consensus that a[n unqualified] shower suffices for men either.
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WAFJun 22 '11 at 1:46

It is definately a problem by ladies. By men it is not such an issue as you mentioned.
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Gershon GoldJun 22 '11 at 1:49

I heard the quote as: "I take a shower before because of V'ahavta Lre'acha K'mocha. I take a shower after because some people aren't makpid on V'ahavta Lre'acha K'mocha." It's supposedly attributed to R' Shlomo Zalman Auerbach over here
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yydlJun 22 '11 at 17:55

1

@yydl I've heard both versions and prefer the first (from a humor point of view). Thanks for the link, but "they say" isn't really a source, which is why I didn't feel comfortable mentioning Rav Auerbach zt"l's name.
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David PerlmanJun 23 '11 at 6:16